Gamma-rays and the production of energetic electrons in enshrouding material - A model for the quiescent radio emission from Cygnus X-3

Details Gamma-rays and the production of energetic electrons in enshrouding material - A model for the quiescent radio emission from Cygnus X-3 Gamma-rays and the production of energetic electrons in enshrouding material - A model for the quiescent radio emission from Cygnus X-3

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..304v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 1, 1983, p. 304-314.

Astronomy and Astrophysics

Astronomy

25

Binary Stars, Gamma Ray Astronomy, Radio Astronomy, Stellar Radiation, X Ray Stars, Compton Effect, Cygnus Constellation, Interstellar Magnetic Fields, Nonthermal Radiation, Particle Production, Synchrotron Radiation

Scientific paper

The generation of relativistic electrons in thermal material enshrouding a gamma ray source is examined. It is shown that electrons with energies less than about 100 MeV are produced mainly by Compton collisions of gamma rays with thermal electrons. Higher energy particles are primarily electrons and positrons generated by the interaction of gamma rays with thermal ions. The Cygnus X-3 system is used as a paradigm throughout. It is shown that the observed gamma ray flux will generate enough electrons, in the amount of enshrouding material suggested by X-ray observations, to power the unusually strong quiescent radio emission. The predicted synchrotron spectrum is shown to fit the observations quite well. A causal link between the medium-energy gamma rays and the radio emission is predicted. The relevance of this model for other nonthermal radio stars is discussed.

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